Keystones — Lintel
Five GCSE retrieval questions · 5 September 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.00038
Answer: 3.8 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² - 8x + 12
Answer: (x - 6)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 29cm, angle = 34°. Find opposite
Answer: 19.6cm -
4. Ratio Mixed ratio problems
£350.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £100.00 -
5. Statistics Mean
Calculate the mean of: 5, 18, 17, 35, 50, 7, 16
Answer: 21.1